tablet 55, third: roots the engine can read; abstentions count; an empty trace is no ground

Live after the second commit (vav :046010f0): a monetary case naming
bereishit 1:1 convened three judges and came back "accepted" — the
interpret seat said "resolved (5 roots, 0 verses)" with
reading(mitzvot_count(0),verse_count(0),grounded_in([],[])), the other
two seats said teiku, and one accept beat two abstentions (the reply
showed majority 1, minority 2). Three defects the tests could not see:

- The engine names roots by letter (bet_resh_aleph; json_bridge reads
  "bet-resh-aleph") and the pipeline sent it the Hebrew, which its
  verse facts never match. BereishitCycle.engine_root_name/1 builds
  the engine's name from the Shoresh Engine's letter names or, for the
  L1 fallback, from the Hebrew with finals folded; the router sends
  that. (The cycle's own Talmudic routing still sends the Hebrew —
  recorded, not changed here: it alters /peah/ask and needs its own
  verification.)
- judge.erl: "resolved" with no verse and no mitzvah is a reading
  coupled to nothing (avodah_zarah.pl Form 2); the judge abstains and
  says "resolved on an empty trace; nothing to stand on".
- panel.erl: the majority is the verdict with the most votes,
  abstentions included; an abstaining plurality or an accept/reject
  tie is teiku.

EUnit 57/0 (plurality, tie, empty trace). Elixir 632/0 (engine_root_name
from names, from Hebrew, nil on nothing; the no-engine case is an
abstaining majority of one, teiku).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

sanhedrin/src/panel.erl

@@ -207,15 +207,21 @@ compute_majority_minority([]) ->
        torah_refs => [],
        vote_count => 0}};
 compute_majority_minority(Votes) ->
-    %% Count accepts vs rejects
     Accepts = [V || V <- Votes, V#vote.verdict == accept],
     Rejects = [V || V <- Votes, V#vote.verdict == reject],
     Abstains = [V || V <- Votes, V#vote.verdict == abstain],
+    NA = length(Accepts), NR = length(Rejects), NB = length(Abstains),
 
+    %% The majority is the verdict with the most votes — abstentions
+    %% count (tablet 55: live, one accept "won" against two
+    %% abstentions, and the reply showed majority 1, minority 2). An
+    %% abstaining plurality, or an accept/reject tie, is teiku
+    %% (determine_outcome reads the majority's verdict).
     {MajVotes, MinVotes} =
-        case length(Accepts) >= length(Rejects) of
-            true  -> {Accepts, Rejects ++ Abstains};
-            false -> {Rejects, Accepts ++ Abstains}
+        if
+            NA > NR, NA >= NB -> {Accepts, Rejects ++ Abstains};
+            NR > NA, NR >= NB -> {Rejects, Accepts ++ Abstains};
+            true              -> {Abstains, Accepts ++ Rejects}
         end,
 
     MajSample = case MajVotes of